Currently, there are two kinds of IUDs available in the United States: the ParaGard T380A and the Mirena levonorgestrel intrauterine system (LNG-IUS). The investigators want to know if women who have IUDs placed at any time during their menstrual cycle have different experiences regarding the following, compared to those who have IUDS placed during the first 7 days of their cycle: bleeding or cramping patterns, active pelvic infections, becoming pregnant more often during that first cycle (window pregnancy).